Multivariate analysis reveals differences in biofilm formation capacity among Listeria monocytogenes lineages

Wladir B. Valderrama, Nancy Ostiguy, Catherine N. Cutter

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Biofilm formation capacity evaluated under identical conditions differs among Listeria monocytogenes lineages. The approach of using one set of factors or one variable at a time fails to explain why some lineages are more prevalent than others in certain environments. This study proposes the use of multivariate analysis to compare biofilm formation by various strains and describes the ecological niches of L. monocytogenes lineages. Nutrient availability, temperature, pH and water activity (aw) at three different levels were used to determine biofilm formation by 41 strains. Despite the high degree of similarity (≤ 80%), distinct lineage-associated biofilm formation patterns were identified. A linear regression model for each strain and a principal component analysis of regression coefficients indicated that Lineages I and III have different, but overlapping, ecological niches. This study is the first to report the use of multivariate analyses to compare biofilm formation by various isolates of L. monocytogenes.

Original languageEnglish (US)
Pages (from-to)1199-1209
Number of pages11
JournalBiofouling
Volume30
Issue number10
DOIs
StatePublished - Nov 26 2014

All Science Journal Classification (ASJC) codes

  • Aquatic Science
  • Applied Microbiology and Biotechnology
  • Water Science and Technology

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